Formula boards have become short and straps are even more outboard than the above boards (8-12 range ??)
the above boards are more 8-11/12 and not 7-11
7 m² sails tend to be used in better winds and thus rougher water - not ideal for wide boards
I have used 7 meter sails on 80 cm wide boards, but that is about the limit
and 10 meter sails are about the limit for those boards as well !!
typically ideal sail range for a board is no more than 2 square meters and NOT four
like 6-8, 7-9, 8-10, etc ...